Establishment of Quantitative Equation for the Mechanical Wear of Ceramics

陶瓷摩擦元件越来越多地用于解决恶劣使用条件下的摩擦学问题。性能变化很大，很大程度上取决于操作条件和材料，目前还不能从第一性原理清楚地预测。本研究将试图解决这一问题，并建立磨损行为、操作条件、材料性能和微观结构之间的定量关系。许多陶瓷材料在干滑动条件下的磨损机理和磨损性能将通过磨损表面和亚表面材料的磨损测量和高分辨率显微镜来确定。磨损行为将与通常测量的微观力学性能（如显微硬度和压痕断裂韧性）以及显微组织相关。

Ceramic triboelements are increasingly being used to solve tribological problems under severe service conditions. The performance varies significantly, depending strongly on operating conditions and on material, and is currently not clearly predictable from first principles. This study will attempt to remedy this problem and develop a quantitative relationship between wear behavior, operating conditions, and material properties and microstructure. The wear mechanisms and wear performance of a number of ceramic materials under dry sliding conditions will be determined by wear measurements and high-resolution microscopy of the worn surface and the subsurface material. The wear behavior will be correlated with commonly measured micro-mechanical properties, such as micro-hardness and indentation fracture toughness, and with microstructure.